How to reduce food and water wastage?

Food and water wastage is a really big problem in the world, especially, when a lot of people are dying of hunger and thirst. At the rate we are depleting out water resources, there will one day be a grave shortage of water for our future generations. The water table under the Earth has barely any water left during the summers and we are not getting enough of rains to fill the water table again.So, there is great article which I came across which talks about how to save food and water. Have a look at it here.